Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
1800150heavily pollutedexcellent141excellent
1700145heavily pollutedexcellent161excellent
1600120moderately pollutedexcellent151excellent
1500110moderately pollutedexcellent131excellent
1400101moderately pollutedexcellent121excellent
130083lightly pollutedexcellent111excellent
120085lightly pollutedexcellent121excellent
110083lightly pollutedexcellent121excellent
100088lightly pollutedexcellent131excellent
090078lightly pollutedexcellent111excellent
080091lightly pollutedexcellent141excellent
0700127moderately pollutedgood211excellent
0600137moderately pollutedgood251excellent
0500177heavily pollutedgood281excellent
0400159heavily pollutedgood271excellent
0300162heavily pollutedgood291excellent
0200163heavily pollutedgood271excellent
0100168heavily pollutedgood271excellent
0000192heavily pollutedgood261excellent
2300170heavily pollutedgood231excellent
2200174heavily pollutedgood211excellent
2100174heavily pollutedgood221excellent
2000144heavily pollutedexcellent171excellent
1900117moderately pollutedexcellent141excellent